QR code color inversion

I use coreldraw with my epilog laser co2 engraver and I have a client that wants to add QR codes to their product. The problem is when you print out with the engraver, the colors are reversed. Basically what I am trying to figure out is if there is a good way to reverse the black and white so when it is engraved whats being engraved is the white and the blank spots are the black. Now I know I can basically redo the code if this was a one time thing but this is going to be 1000 parts a month so I need something more efficent.

I have never been work with "Epilog", but i work with "Trotec" laser every day , in his executing app (which call JobControl ) have one special "stamp" mode which ,by default, every job engraving reversed (because "stamp" mode is dedicated to stamp making which logically must be reversed).
If you have some similar mode in your epilog executing app , you have solution for your problem, if you don't - buy "Trotec". ;-)